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Measurement of the masses and widths of the bottom baryons Σb[superscript ±] and Σb*[superscript ±]

Author(s)
Gomez-Ceballos, Guillelmo; Goncharov, Maxim; Paus, Christoph M. E.
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Abstract
Using data from pp̅ collisions at √s=1.96  TeV recorded by the CDF II detector at the Fermilab Tevatron, we present improved measurements of the masses and first measurements of natural widths of the four bottom baryon resonance states Σ[subscript b][superscript +], Σ[subscript b][superscript *+] and Σ[subscript b][superscript -], Σ[subscript b][superscript *-]. These states are fully reconstructed in their decay modes to Λb0π± where Λ[subscript b][superscript 0]→Λ[subscript c][superscript +]π[superscript -] with Λ[subscript c][superscript +]→pK[superscript -]π[superscript +]. The analysis is based on a data sample corresponding to an integrated luminosity of 6.0  fb[superscript -1] collected by an online event selection based on tracks displaced from the pp̅ interaction point.
Date issued
2012-05
URI
http://hdl.handle.net/1721.1/71648
Department
Massachusetts Institute of Technology. Department of Physics; Massachusetts Institute of Technology. Laboratory for Nuclear Science
Journal
Physical Review D
Publisher
American Physical Society
Citation
T. Aaltonen et al. (CDF Collaboration). "Measurement of the masses and widths of the bottom baryons Σb[superscript ±] and Σb*[superscript ±]" Physical Review D 85, 092011 (2012). © 2012 American Physical Society
Version: Final published version
ISSN
1550-7998
1089-4918

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